* {
    margin: 0;
    padding: 0;
  }

a{	
    text-decoration: none;
    color:#999;
  }  
ul, li {
    list-style: none;
  }
/* 头部导航 */
.header {
  width: 100%;
  height: 64px;
  background-color: #fff;
  z-index: 998;
  font-size: 14px;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  margin-bottom: 40px;
}
.header > .header-center {
  width: 1000px;
  height: 100%;
  margin: 0 auto;
}
.header-center-left {
  width: 180px;
  height: 64px;
  float: left;
}
.header-center-left > a {
  display: block;
  float: left;
  width: 79px;
  height: 37px;
  margin-top: 13px;
  font-size: 0px;
}
.header-center-left > a > img {
  display: block;
  width: 100%;
  height: 100%;
}  
.header-nav {
  width: 74px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  float: right;
  color: #666;
  background-color: #fff;
  border: 1px solid #cdcdcd;
  cursor: pointer;
  border-radius: 44px;
  margin-top: 16px;
  position: relative;
}
.header-nav::after {
  content: '';
  position: absolute;
  top: 13px;
  right: 10px;
  width:0;
  height:0;
  border: 5px solid #ff7e7e;
  border-color: #333 transparent transparent transparent;
}
.header-center-center {
  margin: 16px 0 0 50px;
  width: 284px;
  height: 30px;
  background-color: turquoise;
  float: left;
  border: 1px solid #ff7e7e;
  border-radius: 30px;
  overflow: hidden;
}
.header-center-center > input {
  float: left;
  width: 234px;
  height: 30px;
  outline: none;
  border: none;
  color: #ccc;
  text-indent:15px;
}
.header-center-center > button {
  display: block;
  outline: none;
  border: none;
  background-color: #ff7e7e;
  float: left;
  width: 50px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  color: #ccc;
  font-size: 18px;
}
.header-center-right {
  width: 420px;
  height: 64px;
  float: right;
  display: flex;
  justify-content: space-between;
}
.header-center-right > div:nth-child(1) {
  width: 78px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  border-radius: 30px;
  color: #fff;
  background-color: #ff7e7e;
  margin-top: 16px;
  margin-right: 10px;

  cursor: pointer;
}
.header-center-right > div:nth-child(2) {
  line-height: 64px;
  text-align: center;
  color: #777;
  font-size: 16px;
}
.header-center-right > div:nth-child(3) {
  line-height: 64px;
  text-align: center;
  color: #777;
  font-size: 16px;
}
.header-center-right > div:nth-child(4) {
  line-height: 64px;
  text-align: center;
  color: #777;
  font-size: 16px;
}
/* banner */
.banner {
  width: 100%;
  height: 74px;
  margin-bottom: 20px;
}
.banner-center {
  width: 1000px;
  height: 74px;
  margin: 0 auto;
}
.banner-center > img {
  display: block;
  width: 100%;
  height: 100%;
}
/* 导航部分 */
.nav {
  width: 1000px;
  height: 30px;
  margin: 0 auto 20px;
  border: none;
  box-sizing: border-box;
}
.nav > select {
  height: 30px;
  display: block;
  margin-left: -100px;
  font-size: 16px;
}
/* 内容 */
.content {
  width: 1000px;
  margin: 10px auto;
}

.content::after {
  content: '';
  display: block;
  clear: both;
}

.content > ul {
  width: 240px;
  margin: 0 5px;
  float: left;
}

.content > ul > li {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #333333;
  margin-bottom: 10px;
  display: flex;
  flex-direction: column;
}

.content > ul > li:last-child {
  margin-bottom: 0;
}

.content > ul > li > .show {
  width: 100%;
}

.content > ul > li > .show > img {
  width: 100%;
}

.content > ul > li > .info {
  box-sizing: border-box;
  padding: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 120px;
}

.content > ul > li > .info > .avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  overflow: hidden;
}

.content > ul > li > .info > .avatar > img {
  width: 100%;
  height: 100%;
} 
/* 页脚 */
.footer {
  width: 1000px;
  height: 300px;
  font-size: 100px;
  border: 1px solid #ccc;
  color: #ff7e7e;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
}
